CN112808243A - Air purifying agent for efficiently removing formaldehyde - Google Patents
Air purifying agent for efficiently removing formaldehyde Download PDFInfo
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- CN112808243A CN112808243A CN202110020592.3A CN202110020592A CN112808243A CN 112808243 A CN112808243 A CN 112808243A CN 202110020592 A CN202110020592 A CN 202110020592A CN 112808243 A CN112808243 A CN 112808243A
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 239000012629 purifying agent Substances 0.000 title claims abstract description 30
- 238000000227 grinding Methods 0.000 claims abstract description 35
- 238000003851 corona treatment Methods 0.000 claims abstract description 18
- 239000012767 functional filler Substances 0.000 claims abstract description 17
- 230000035939 shock Effects 0.000 claims abstract description 16
- 238000002791 soaking Methods 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims abstract description 11
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims description 48
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 37
- 239000011324 bead Substances 0.000 claims description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 238000007873 sieving Methods 0.000 claims description 15
- 239000004575 stone Substances 0.000 claims description 13
- 238000002635 electroconvulsive therapy Methods 0.000 claims description 11
- UYXTWWCETRIEDR-UHFFFAOYSA-N Tributyrin Chemical compound CCCC(=O)OCC(OC(=O)CCC)COC(=O)CCC UYXTWWCETRIEDR-UHFFFAOYSA-N 0.000 claims description 10
- 235000013312 flour Nutrition 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 8
- 235000007866 Chamaemelum nobile Nutrition 0.000 claims description 6
- 244000042664 Matricaria chamomilla Species 0.000 claims description 6
- 235000007232 Matricaria chamomilla Nutrition 0.000 claims description 6
- 241000830536 Tripterygium wilfordii Species 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 235000015398 thunder god vine Nutrition 0.000 claims description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 5
- 229920001661 Chitosan Polymers 0.000 claims description 5
- 244000017020 Ipomoea batatas Species 0.000 claims description 5
- 235000002678 Ipomoea batatas Nutrition 0.000 claims description 5
- 241000209140 Triticum Species 0.000 claims description 5
- 235000021307 Triticum Nutrition 0.000 claims description 5
- 240000008042 Zea mays Species 0.000 claims description 5
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 5
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- 235000005822 corn Nutrition 0.000 claims description 5
- OPGYRRGJRBEUFK-UHFFFAOYSA-L disodium;diacetate Chemical compound [Na+].[Na+].CC([O-])=O.CC([O-])=O OPGYRRGJRBEUFK-UHFFFAOYSA-L 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000011812 mixed powder Substances 0.000 claims description 5
- 229920000136 polysorbate Polymers 0.000 claims description 5
- 229920001592 potato starch Polymers 0.000 claims description 5
- 239000001632 sodium acetate Substances 0.000 claims description 5
- 235000017454 sodium diacetate Nutrition 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000000967 suction filtration Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 14
- 230000002045 lasting effect Effects 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 4
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract description 3
- 239000003570 air Substances 0.000 description 27
- 241000196324 Embryophyta Species 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 11
- 239000002994 raw material Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 8
- 241000208341 Hedera Species 0.000 description 5
- 230000036541 health Effects 0.000 description 5
- 238000005034 decoration Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000007800 oxidant agent Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000004887 air purification Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000003905 indoor air pollution Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000011941 photocatalyst Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000002516 radical scavenger Substances 0.000 description 2
- 244000060011 Cocos nucifera Species 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000002386 air freshener Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 208000006673 asthma Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3085—Chemical treatments not covered by groups B01J20/3007 - B01J20/3078
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/704—Solvents not covered by groups B01D2257/702 - B01D2257/7027
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/45—Gas separation or purification devices adapted for specific applications
- B01D2259/4508—Gas separation or purification devices adapted for specific applications for cleaning air in buildings
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention discloses an air purifying agent for efficiently removing formaldehyde, belonging to the technical field of preparation of purifying agents, and the air purifying agent consists of the following components in parts by weight: 10-14 parts of functional filler and 90-120 parts of carrier; the preparation method comprises the following steps: (1) carrying out ultraviolet irradiation treatment; (2) laser shock wave processing; (3) mechanical grinding treatment; (4) carrying out corona treatment; (5) carrying out cryogenic crushing treatment; (6) spraying and covering; (7) soaking; (8) and (5) preparing a finished product. Compared with the air purifying agent prepared by a control group method, the air purifying agent prepared by the method has better formaldehyde removal effect, and the removal effect is stable all the time along with the passage of time, namely the air purifying agent prepared by the method has stable performance and lasting effectiveness.
Description
Technical Field
The invention belongs to the technical field of preparation of purifying agents, and particularly relates to an air purifying agent for efficiently removing formaldehyde.
Background
People spend about 70% of their lives indoors, and people absorb 12 cubic meters of air daily, so the importance of air quality to human health is self-evident. Among the ten major factors threatening human health released by the world health organization, world health report 2002, indoor air pollution is listed. Indoor ambient air pollution broadly refers to pollution including homes, offices, public buildings, and the like, all of which cause a feeling of discomfort to the human body and other acute and chronic potential damage. Meanwhile, with the development of the economic level of China in recent years, the requirements on the living environment and the indoor decoration are higher and higher. However, as no perfect rules exist to regulate decoration and construction industries, the complaints of decoration and decoration pollution in China are increasing day by day, and indoor air pollution becomes a healthy invisible killer. According to survey statistics, 80% of indoor air quality of the family can not meet the national standard requirement, and nearly 90% of the quality exceeding is caused by formaldehyde.
Under such circumstances, various air purifiers, such as a formaldehyde scavenger, an air freshener, activated carbon (coconut shell, wood), electrostatic dust removal, an air purifier, anions, a photocatalyst, a bio-enzyme, and the like, should be used. As the market has urgent needs, a large number of enterprises are introduced, and the number of large and small enterprises for producing air scavenger products reaches more than 500 nowadays in China. The appearance of the products meets the requirements of people to a certain extent, various manufacturers and dealers can publicize the effect of the products on the spot, the positive effect is blown far beyond the actual effect, and meanwhile, some inferior products also board the stage of air purification treatment, so that the negative effect is not determined at present. The chemical products in the market at present achieve the purpose of purifying air through chemical reaction, and mainly comprise formaldehyde scavengers, photocatalyst products, ozone treatment, oxidants and other products. In addition, some chemical substances in some strong oxidant products are uncomfortable, the strong oxidant can rust handles, hardware and the like of furniture, and secondary pollution chemical substances can be generated to cause harm to human bodies, especially asthma patients, old people or pregnant women, so that the health of the old people or pregnant women can be seriously harmed. In addition, most of the existing air purifiers on the market have the defect of poor durability, and in the using process, the effective time is short, and the application value is low.
Disclosure of Invention
The invention aims to provide an air purifying agent for efficiently removing formaldehyde, which aims to solve the defects in the prior art.
The technical scheme adopted by the invention is as follows:
an air purifying agent for efficiently removing formaldehyde comprises the following components in parts by weight: 10-14 parts of functional filler and 90-120 parts of carrier; the preparation method comprises the following steps:
(1) ultraviolet irradiation treatment:
placing the tripterygium wilfordii, the ivy and the chamomile together under ultraviolet light according to the weight ratio of 3-4: 4-5: 1 for irradiation, and taking out the mixture A for later use;
(2) laser shock wave treatment:
placing the mixture A obtained in the step (1) in an Nd-YAG laser to carry out laser shock treatment, and obtaining a mixture B for later use after the laser shock treatment is finished;
(3) mechanical grinding treatment:
grinding the mixture B obtained in the step (2) in a bead mill, and sieving the ground mixture B with a 60-80-mesh sieve to obtain mixed powder C for later use;
(4) corona treatment:
putting the activated carbon into a corona discharge instrument for corona treatment, taking out after 2-3 min of treatment, grinding in a bead mill, and then sieving by a 100-140-mesh sieve to obtain activated carbon powder for later use;
(5) and (3) cryogenic crushing treatment:
crushing the loess stones in a cryogenic crusher, performing proton irradiation treatment while crushing, and sieving with a 200-400-mesh sieve to obtain loess stones for later use;
(6) spraying treatment:
uniformly spraying the loess powder obtained in the step (5) on the surface of the activated carbon powder obtained in the step (4) to obtain a mixture D for later use;
(7) soaking treatment:
uniformly mixing the mixture D obtained in the step (6) and the mixture C obtained in the step (3) according to the weight ratio of 1: 13-17, immersing the mixture into a treatment solution, soaking the mixture for 1-2 hours at constant temperature, performing suction filtration, and drying to obtain a functional filler for later use;
(8) and (3) preparing a finished product:
and (3) placing the carrier into an autoclave to cook sticky paste, pouring the functional filler obtained in the step (7) into the autoclave, stirring uniformly, and extruding to obtain the product with 4-10 meshes.
Further, the wavelength of the ultraviolet light is controlled to be 200-400 nm during the ultraviolet light irradiation treatment in the step (1), and the irradiation treatment time is 40-60 min.
Further, the laser in the step (2) has a wavelength of 1-1.5 μm, a pulse width of 30-40 ns, and a laser impact power density of 0.4-0.8 GW/cm2The energy is 2-5J, and the laser shock wave treatment time is 10-18 min.
Further, the rotating speed of the bead mill is controlled to be 300-400 rpm during the grinding treatment in the step (3).
Further, the voltage is controlled to be 3-6 kV during the corona treatment in the step (4), the rotating speed of the bead mill is controlled to be 2000-4000 rpm during the grinding, and the grinding treatment is carried out for 15-21 min.
Further, the temperature in the cryogenic crusher is controlled to be-30 to-20 ℃ during crushing treatment in the step (5), the crushing treatment time is 8 to 10min, and the irradiation dose is controlled to be 3 to 7MeV during proton irradiation treatment.
Further, the treating fluid in the step (7) comprises the following components in percentage by weight: 0.7-0.9% of sodium hydroxide, 1-2% of ammonia water, 2-4% of chitosan, 0.07-0.09% of sodium diacetate, 206-10% of tween, 3-5% of tributyrin and the balance of water.
Further, the carrier in the step (8) is at least: one of corn flour, wheat flour and sweet potato flour.
The invention has the following beneficial effects:
compared with the air purifying agent prepared by a control group method, the air purifying agent prepared by the method has better formaldehyde removal effect, and the removal effect is stable all the time along with the passage of time, namely the air purifying agent prepared by the method has stable performance and lasting effectiveness. Specifically, tripterygium wilfordii, ivy and chamomile are placed under ultraviolet light according to a proper proportion for ultraviolet light irradiation treatment, and a certain chemical reaction occurs on the surface under the irradiation of the ultraviolet light, so that the surface tension of the raw materials is improved, and the wettability and the adhesiveness of the raw materials are improved. Then, the plant raw materials are subjected to laser shock wave treatment, the laser shock waves irradiate the surfaces of the plant raw materials, the plant raw materials absorb pulse energy of the laser shock waves, the surfaces of the plant raw materials are subjected to vaporization ionization, high-temperature high plasma is formed and is rapidly sprayed outwards, therefore, the degree of polymerization of plant fibers is reduced, the activity of the plant raw materials is improved, the plant raw materials are placed in a bead mill for grinding, the kinetic energy generated in the grinding process is effectively absorbed by controlling the grinding speed, the degree of polymerization of the plant fibers is further reduced, the surface activity of the plant fibers is improved, and the processing characteristics of the plant fibers can be improved by grinding. The activated carbon is placed in a corona instrument for corona treatment, micro-concave dense holes can be generated on the surface of the activated carbon through discharge, the pores of the activated carbon can be enlarged, the surface can be roughened, the specific surface area is increased, the surface activity is increased, the adsorption characteristic of the activated carbon to formaldehyde is enhanced, and the processing characteristic of the activated carbon can be improved. Carry out shredding with the loess stone in the low temperature environment, can effectually prevent it from taking place the reunion phenomenon when improving the fineness, the loess stone powder after will refining spouts the surface of covering the activated carbon powder after handling, the loess stone powder adsorbs in the hole that gets into activated carbon, further improve the specific surface area of activated carbon, soak in the treatment fluid after mixing this composite construction and the plant raw materials powder after handling, under the effect of active ingredient, mutual gomphosis combines between each raw materials, form stable homogenized functional filler, be used for this filler in the preparation of air purification agent, can not only last effectual formaldehyde in the adsorption-air, can also lasting slow release antibacterial component, improve the air quality. And finally, coating the carrier, so that the processing and the storage of the carrier are facilitated, and the product performance of the carrier is improved.
Drawings
FIG. 1 is a comparison chart of the formaldehyde scavenging effect test data of each example, comparative example 1 and the control group of the air purifiers of the present invention.
Detailed Description
The following will clearly and completely describe the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
An air purifying agent for efficiently removing formaldehyde comprises the following components in parts by weight: 10 parts of functional filler and 90 parts of carrier; the preparation method comprises the following steps:
(1) ultraviolet irradiation treatment:
placing the tripterygium wilfordii, the ivy and the chamomile together under ultraviolet light according to the weight ratio of 3:4:1 for irradiation, and taking out the mixture A for later use;
(2) laser shock wave treatment:
placing the mixture A obtained in the step (1) in an Nd-YAG laser to carry out laser shock treatment, and obtaining a mixture B for later use after the laser shock treatment is finished;
(3) mechanical grinding treatment:
grinding the mixture B obtained in the step (2) in a bead mill, and sieving the ground mixture B with a 60-mesh sieve to obtain mixed powder C for later use;
(4) corona treatment:
putting the activated carbon into a corona discharge instrument for corona treatment, taking out after 2min of treatment, grinding in a bead mill, and then sieving by a 100-mesh sieve to obtain activated carbon powder for later use;
(5) and (3) cryogenic crushing treatment:
crushing the loess stones in a cryogenic crusher, performing proton irradiation treatment while crushing, and sieving with a 200-mesh sieve to obtain loess stones for later use;
(6) spraying treatment:
uniformly spraying the loess powder obtained in the step (5) on the surface of the activated carbon powder obtained in the step (4) to obtain a mixture D for later use;
(7) soaking treatment:
uniformly mixing the mixture D obtained in the step (6) and the mixture C obtained in the step (3) according to the weight ratio of 1:13, immersing the mixture into a treatment solution, soaking the mixture for 1 hour at constant temperature, performing suction filtration, and drying to obtain a functional filler for later use;
(8) and (3) preparing a finished product:
and (3) placing the carrier into an autoclave to cook sticky paste, pouring the functional filler obtained in the step (7) into the autoclave, stirring uniformly, and extruding into 4 meshes.
And (2) controlling the wavelength of ultraviolet light to be 200nm during the ultraviolet light irradiation treatment in the step (1), wherein the irradiation treatment time is 40 min.
Step (ii) of(2) The laser has a wavelength of 1 μm, a pulse width of 30ns, and a laser impact power density of 0.4GW/cm2The energy is 2J, and the time of laser shock wave treatment is 10 min.
And (4) controlling the rotating speed of the bead mill to be 300rpm during the grinding treatment in the step (3).
And (4) controlling the voltage to be 3kV during corona treatment, controlling the rotating speed of the bead mill to be 2000rpm during grinding, and carrying out grinding treatment for 15 min.
And (5) controlling the temperature in the cryogenic crusher to be-30 ℃ during crushing treatment, controlling the crushing treatment time to be 8min, and controlling the irradiation dose to be 3MeV during proton irradiation treatment.
The treating fluid in the step (7) comprises the following components in percentage by weight: 0.7% of sodium hydroxide, 1% of ammonia water, 2% of chitosan, 0.07% of sodium diacetate, 206% of tween, 3% of tributyrin and the balance of water.
The carrier in the step (8) is at least: one of corn flour, wheat flour and sweet potato flour.
Example 2
An air purifying agent for efficiently removing formaldehyde comprises the following components in parts by weight: 12 parts of functional filler and 105 parts of carrier; the preparation method comprises the following steps:
(1) ultraviolet irradiation treatment:
placing the tripterygium wilfordii, the ivy and the chamomile together under ultraviolet light according to the weight ratio of 3.5:4.5:1 for irradiation, and taking out the mixture A for later use;
(2) laser shock wave treatment:
placing the mixture A obtained in the step (1) in an Nd-YAG laser to carry out laser shock treatment, and obtaining a mixture B for later use after the laser shock treatment is finished;
(3) mechanical grinding treatment:
grinding the mixture B obtained in the step (2) in a bead mill, and sieving with a 70-mesh sieve to obtain mixed powder C for later use;
(4) corona treatment:
putting the activated carbon into a corona discharge instrument for corona treatment, taking out after 2.5min of treatment, grinding in a bead mill, and then sieving by a 120-mesh sieve to obtain activated carbon powder for later use;
(5) and (3) cryogenic crushing treatment:
crushing the loess stones in a cryogenic crusher, performing proton irradiation treatment while crushing, and sieving with a 300-mesh sieve to obtain loess stones for later use;
(6) spraying treatment:
uniformly spraying the loess powder obtained in the step (5) on the surface of the activated carbon powder obtained in the step (4) to obtain a mixture D for later use;
(7) soaking treatment:
uniformly mixing the mixture D obtained in the step (6) and the mixture C obtained in the step (3) according to the weight ratio of 1:15, immersing the mixture into a treatment solution, soaking the mixture for 1.5 hours at constant temperature, performing suction filtration, and drying to obtain a functional filler for later use;
(8) and (3) preparing a finished product:
and (3) placing the carrier into an autoclave to cook sticky paste, pouring the functional filler obtained in the step (7) into the autoclave, stirring uniformly, and extruding into 7 meshes.
And (2) controlling the wavelength of ultraviolet light to be 300nm during the ultraviolet light irradiation treatment in the step (1), wherein the irradiation treatment time is 50 min.
The laser in the laser shock treatment in the step (2) has the wavelength of 1.25 mu m, the pulse width of 35ns and the laser shock power density of 0.6GW/cm2The energy is 3.5J, and the laser shock wave treatment time is 14 min.
And (4) controlling the rotating speed of the bead mill to be 350rpm during the grinding treatment in the step (3).
And (4) controlling the voltage to be 4.5kV during corona treatment, controlling the rotating speed of a bead mill to be 3000rpm during grinding, and carrying out grinding treatment for 18 min.
And (5) controlling the temperature in the cryogenic crusher to be-25 ℃ during crushing treatment, controlling the crushing treatment time to be 9min, and controlling the irradiation dose to be 5MeV during proton irradiation treatment.
The treating fluid in the step (7) comprises the following components in percentage by weight: 0.8% of sodium hydroxide, 1.5% of ammonia water, 3% of chitosan, 0.08% of sodium diacetate, 208% of tween, 4% of tributyrin and the balance of water.
The carrier in the step (8) is at least: one of corn flour, wheat flour and sweet potato flour.
Example 3
An air purifying agent for efficiently removing formaldehyde comprises the following components in parts by weight: 14 parts of functional filler and 120 parts of carrier; the preparation method comprises the following steps:
(1) ultraviolet irradiation treatment:
placing the tripterygium wilfordii, the ivy and the chamomile together under ultraviolet light according to the weight ratio of 4:5:1 for irradiation, and taking out the mixture A for later use;
(2) laser shock wave treatment:
placing the mixture A obtained in the step (1) in an Nd-YAG laser to carry out laser shock treatment, and obtaining a mixture B for later use after the laser shock treatment is finished;
(3) mechanical grinding treatment:
grinding the mixture B obtained in the step (2) in a bead mill, and sieving with a 80-mesh sieve to obtain mixed powder C for later use;
(4) corona treatment:
putting the activated carbon into a corona discharge instrument for corona treatment, taking out after 3min of treatment, grinding in a bead mill, and then sieving by a 140-mesh sieve to obtain activated carbon powder for later use;
(5) and (3) cryogenic crushing treatment:
crushing the loess stones in a cryogenic crusher, performing proton irradiation treatment while crushing, and sieving with a 400-mesh sieve to obtain loess stones for later use;
(6) spraying treatment:
uniformly spraying the loess powder obtained in the step (5) on the surface of the activated carbon powder obtained in the step (4) to obtain a mixture D for later use;
(7) soaking treatment:
uniformly mixing the mixture D obtained in the step (6) and the mixture C obtained in the step (3) according to the weight ratio of 1:17, immersing the mixture into a treatment solution, soaking the mixture for 2 hours at constant temperature, performing suction filtration, and drying to obtain a functional filler for later use;
(8) and (3) preparing a finished product:
and (3) placing the carrier into an autoclave to cook sticky paste, pouring the functional filler obtained in the step (7) into the autoclave, stirring uniformly, and extruding into 10 meshes.
And (2) controlling the wavelength of ultraviolet light to be 400nm during the ultraviolet light irradiation treatment in the step (1), wherein the irradiation treatment time is 60 min.
The laser in the step (2) has a wavelength of 1.5 μm, a pulse width of 40ns, and a laser impact power density of 0.8GW/cm2The energy is 5J, and the time of laser shock wave treatment is 18 min.
And (4) controlling the rotating speed of the bead mill to be 400rpm during the grinding treatment in the step (3).
And (4) controlling the voltage to be 6kV during corona treatment, controlling the rotating speed of a bead mill to be 4000rpm during grinding, and carrying out grinding treatment for 21 min.
And (5) controlling the temperature in the cryogenic crusher to be-20 ℃ during crushing treatment, controlling the crushing treatment time to be 10min, and controlling the irradiation dose to be 7MeV during proton irradiation treatment.
The treating fluid in the step (7) comprises the following components in percentage by weight: 0.9% of sodium hydroxide, 2% of ammonia water, 4% of chitosan, 0.09% of sodium diacetate, 2010% of tween, 5% of tributyrin and the balance of water.
The carrier in the step (8) is at least: one of corn flour, wheat flour and sweet potato flour.
Comparative example 1
This comparative example 1 was compared with example 2, and the ultraviolet light irradiation treatment in step (1) was omitted, except that the other method steps were the same.
Comparative example 2
This comparative example 2 was compared with example 2 in that the whole process of the laser shock wave treatment of step (2) was omitted except that the steps of the other methods were the same.
Comparative example 3
This comparative example 3 was compared with example 2, omitting the corona treatment in step (4), except that the process steps were otherwise the same.
Comparative example 4
This comparative example 4 was compared with example 2, omitting the proton irradiation treatment in step (5), except that the process steps were the same.
Control group
The application numbers are: CN201010217272.9 discloses an air purifying agent. Reference is made in detail to the method of example 1 of this detailed description of the invention.
For comparing the effects of the invention, A, B, C, D, E, F five parts with the same structure, the same area and the sunshine of about 30m are selected3The test rooms simulate the test conditions of a large-scale environment test chamber, the air temperature in the test room is controlled to be (21 +/-2) ° C, the relative humidity is (40 +/-5)%, the wind speed is (0.3 +/-0.1) m/s, formaldehyde is used as a representative pollutant, a fan in the room is started, after the concentration of the formaldehyde in the room is stable, a British PPM400 type formaldehyde analyzer is used for measuring the concentration of the formaldehyde, then air purifiers prepared by the methods of the embodiment 2, the comparative examples 1-4 and the comparison group are simultaneously and equivalently placed in each test room and placed in a surface dish on a test table with the height of 0.8m in the test room, the concentration change of the formaldehyde is continuously measured within a certain time interval, and statistics is carried out. Specific experimental comparative data are shown in figure 1.
As can be seen from FIG. 1, compared with the air purifying agent prepared by the method of the control group, the air purifying agent prepared by the method of the invention has better formaldehyde removal effect, and the removal effect is stable all the time along with the passage of time, namely the air purifying agent prepared by the method of the application has stable performance and lasting effectiveness.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the present invention is not limited to the illustrated embodiments, and all the modifications and equivalents of the embodiments may be made without departing from the spirit of the present invention.
Claims (8)
1. The air purifying agent for efficiently removing formaldehyde is characterized by comprising the following components in parts by weight: 10-14 parts of functional filler and 90-120 parts of carrier; the preparation method comprises the following steps:
(1) ultraviolet irradiation treatment:
placing the tripterygium wilfordii, the ivy and the chamomile together under ultraviolet light according to the weight ratio of 3-4: 4-5: 1 for irradiation, and taking out the mixture A for later use;
(2) laser shock wave treatment:
placing the mixture A obtained in the step (1) in an Nd-YAG laser to carry out laser shock treatment, and obtaining a mixture B for later use after the laser shock treatment is finished;
(3) mechanical grinding treatment:
grinding the mixture B obtained in the step (2) in a bead mill, and sieving the ground mixture B with a 60-80-mesh sieve to obtain mixed powder C for later use;
(4) corona treatment:
putting the activated carbon into a corona discharge instrument for corona treatment, taking out after 2-3 min of treatment, grinding in a bead mill, and then sieving by a 100-140-mesh sieve to obtain activated carbon powder for later use;
(5) and (3) cryogenic crushing treatment:
crushing the loess stones in a cryogenic crusher, performing proton irradiation treatment while crushing, and sieving with a 200-400-mesh sieve to obtain loess stones for later use;
(6) spraying treatment:
uniformly spraying the loess powder obtained in the step (5) on the surface of the activated carbon powder obtained in the step (4) to obtain a mixture D for later use;
(7) soaking treatment:
uniformly mixing the mixture D obtained in the step (6) and the mixture C obtained in the step (3) according to the weight ratio of 1: 13-17, immersing the mixture into a treatment solution, soaking the mixture for 1-2 hours at constant temperature, performing suction filtration, and drying to obtain a functional filler for later use;
(8) and (3) preparing a finished product:
and (3) placing the carrier into an autoclave to cook sticky paste, pouring the functional filler obtained in the step (7) into the autoclave, stirring uniformly, and extruding to obtain the product with 4-10 meshes.
2. The air purifying agent for efficiently removing formaldehyde according to claim 1, wherein the wavelength of the ultraviolet light is controlled to be 200-400 nm during the ultraviolet light irradiation treatment in the step (1), and the irradiation treatment time is 40-60 min.
3. The air purifying agent for efficiently removing formaldehyde according to claim 1, wherein the laser has a wavelength of 1 to 1.5 μm, a pulse width of 30 to 40ns, and a laser impact power density of 0.4 to 0.8GW/cm during the laser impact treatment in the step (2)2The energy is 2-5J, and the laser shock wave treatment time is 10-18 min.
4. The air purifying agent for efficiently removing formaldehyde according to claim 1, wherein the rotation speed of the bead mill during the grinding treatment in the step (3) is controlled to be 300-400 rpm.
5. The air purifying agent for efficiently removing formaldehyde according to claim 1, wherein the voltage during the corona treatment in the step (4) is controlled to be 3-6 kV, the rotation speed of a bead mill during grinding is controlled to be 2000-4000 rpm, and the grinding treatment is 15-21 min.
6. The air purifying agent for efficiently removing formaldehyde according to claim 1, wherein the temperature in the cryogenic crusher is controlled to be-30 to-20 ℃ during crushing treatment in the step (5), the crushing treatment time is 8 to 10min, and the irradiation dose is controlled to be 3 to 7MeV during proton irradiation treatment.
7. The air purifying agent for efficiently removing formaldehyde according to claim 1, wherein the treating fluid in the step (7) comprises the following components in percentage by weight: 0.7-0.9% of sodium hydroxide, 1-2% of ammonia water, 2-4% of chitosan, 0.07-0.09% of sodium diacetate, 206-10% of tween, 3-5% of tributyrin and the balance of water.
8. The air purifying agent for removing formaldehyde with high efficiency as claimed in claim 1, wherein the carrier in the step (8) is at least: one of corn flour, wheat flour and sweet potato flour.
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